方旭东, 徐鸿麟. Development of Process for Precipitation-Hardening Stainless Steel TP347H Seamless Tube for Power Station Boiler[J]. Special Steel, 2007, 28(2): 49-50.
方旭东, 徐鸿麟. Development of Process for Precipitation-Hardening Stainless Steel TP347H Seamless Tube for Power Station Boiler[J]. Special Steel, 2007, 28(2): 49-50.DOI:
φ38 mm×6.6 mm seamless tube of steel TP347H(1Cr19Nil1Nb) was produced at Taiyuan Steel by hot metal pretreatment + 30 t EAF melting alloying steel -75 t K-OBM-S blowing -VOD treatment - LF -bloom by 5.6 t ingot or 220 mm×220 mm concasting billet -φ100 mm tube blank piercing - cold rolling (cold drawing) flow sheet. Results showed that the tube had excellent cold and hot workability by control [O
]
≤30×10
-6
[H
]
≤3×10
-6
As≤ 0.0030%
Pb
Sn
Sb
Bi respectively ≤0.0010%
and C content in steel0.06%~0.08%
Nb content 0.6%~ 0.8%
and each property of tube met the requirement of ASME and GB standard.